This file is indexed.

/usr/lib/x86_64-linux-gnu/libgbm.so.1 is in libgbm1 18.0.0~rc5-1ubuntu1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/lib/x86_64-linux-gnu/libgbm.so.1.0.0